Institute of Photonics and Quantum Sciences, School of Engineering and Physical Sciences, Heriot-Watt University, Edinburgh, EH14 4AS, UK.
School of Materials, Zhengzhou University of Aeronautics, 450015, Zhengzhou, China.
Nat Commun. 2023 Jul 3;14(1):3915. doi: 10.1038/s41467-023-39599-8.
Perfect vector vortex beams (PVVBs) have attracted considerable interest due to their peculiar optical features. PVVBs are typically generated through the superposition of perfect vortex beams, which suffer from the limited number of topological charges (TCs). Furthermore, dynamic control of PVVBs is desirable and has not been reported. We propose and experimentally demonstrate hybrid grafted perfect vector vortex beams (GPVVBs) and their dynamic control. Hybrid GPVVBs are generated through the superposition of grafted perfect vortex beams with a multifunctional metasurface. The generated hybrid GPVVBs possess spatially variant rates of polarization change due to the involvement of more TCs. Each hybrid GPVVB includes different GPVVBs in the same beam, adding more design flexibility. Moreover, these beams are dynamically controlled with a rotating half waveplate. The generated dynamic GPVVBs may find applications in the fields where dynamic control is in high demand, including optical encryption, dense data communication, and multiple particle manipulation.
完美矢量涡旋光束（PVVBs）因其独特的光学特性而引起了广泛关注。PVVB 通常通过完美涡旋光束的叠加产生，而完美涡旋光束的拓扑荷（TC）数量有限。此外，对 PVVB 的动态控制也是理想的，但目前尚未有相关报道。我们提出并实验演示了混合嫁接完美矢量涡旋光束（GPVVBs）及其动态控制。混合 GPVVB 是通过多功能超表面对嫁接完美涡旋光束的叠加产生的。由于涉及更多的 TC，所产生的混合 GPVVB 具有空间变化的偏振变化率。每个混合 GPVVB 在同一光束中包含不同的 GPVVB，增加了更多的设计灵活性。此外，这些光束可以通过旋转半波片进行动态控制。所产生的动态 GPVVB 可能在需要动态控制的领域有应用，包括光加密、密集数据通信和多个粒子操纵。
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